Home / 11,990.96-17,988.08-4,091.35

Finding the Fourth Proportional to 11,990.96, 17,988.08 and 4,091.35

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Solution

The fourth proportional to 11,990.96, 17,988.08 and 4,091.35 is: 6,137.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.96 : 17,988.08 = 4,091.35 : x
  2. Step 2: Convert to fraction form
    11,990.96/17,988.08 = 4,091.35/x
  3. Step 3: Cross multiply
    11,990.96x = 17,988.08 × 4,091.35
  4. Step 4: Simplify right side
    11,990.96x = 73,595,584.52
  5. Step 5: Solve for x
    x = 73,595,584.52/11,990.96
  6. Step 6: Final answer
    x = 6,137.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.